Yes (I'm using the pro version with Windows). Caveat: I've used this for down-rezzing but not up-rezzing.

Click on the "output" tab. Under process recipe you see the "basic" tab and look for "scale". BY default it is set for 100% but you can type any numerical value up to 250% (at 300 pixels/inch). Or you can experiment with the different "scale" settings to see what suits you.